Napkin holder



FIG. 1 is a top, side and front perspective view of a napkin holder showing my new design;

FIG. 2 is a left side elevation view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a front elevation view thereof, the rear view being identical thereto;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a napkin holder, as shown and described. 